Water Quality in Lake Montezuma, AZ: No Violations — Grade C
Grade C · Score 55/100 · 1 water system · Updated 2026-05-03
Lake Montezuma's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Within the water supply network of Lake Montezuma, AZ, no EPA violations appear anywhere in the federal compliance record — 1 public water system are tracked here, and not one has been cited for an MCL exceedance, a monitoring failure, or any other reportable compliance event.
Water Quality by ZIP Code in Lake Montezuma
Water quality varies across Lake Montezuma's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 86342 | C | 55 | 0 | 0 | View report → |
Water Quality Overview
Lake Montezuma, Arizona receives a water quality grade of C with an overall score of 55 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
No EPA violations have been recorded for the 1 water system serving Lake Montezuma. This is a positive indicator, though it does not guarantee the absence of all contaminants — some substances (like PFAS) are not yet fully regulated.
What Grade C Means
A grade of C indicates moderate compliance issues. Lake Montezuma's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
Lead testing data for Lake Montezuma is currently being collected. The EPA requires all community water systems to test for lead under the Lead and Copper Rule.
Radon Risk
Lake Montezuma is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Lake Montezuma
Lake Montezuma is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 3,423 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
How to Check Your Water in Lake Montezuma
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Lake Montezuma vs. Nearby Arizona Cities
How Lake Montezuma's water quality compares to similar cities in Arizona:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Lake Montezuma | C | 0 | 1 | 3,423 |
| Tubac | C | 21 | 5 | 3,431 |
| Cornville | C | 11 | 4 | 3,374 |
| Saint Johns | C | 10 | 1 | 3,500 |
Common Questions About Lake Montezuma Water
These are the most common questions residents search for about water quality in Lake Montezuma, Arizona:
Is Lake Montezuma water hard or soft? Water hardness varies by source. Lake Montezuma's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Lake Montezuma tap water? Lake Montezuma's water receives a grade of C (55/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Lake Montezuma? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Lake Montezuma vs. Arizona Average
Understanding how Lake Montezuma compares to the broader Arizona average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Lake Montezuma.
ZIP Codes in Lake Montezuma
Lake Montezuma spans 1 ZIP code. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.